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Finding the Fourth Proportional to 22,213.60, 30,654.88 and 12,141.88

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Solution

The fourth proportional to 22,213.60, 30,654.88 and 12,141.88 is: 16,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,213.60 : 30,654.88 = 12,141.88 : x
  2. Step 2: Convert to fraction form
    22,213.60/30,654.88 = 12,141.88/x
  3. Step 3: Cross multiply
    22,213.60x = 30,654.88 × 12,141.88
  4. Step 4: Simplify right side
    22,213.60x = 372,207,874.37
  5. Step 5: Solve for x
    x = 372,207,874.37/22,213.60
  6. Step 6: Final answer
    x = 16,755.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.